// Source file: string-input-gets.c
#include <stdio.h>
#include <string.h>
#define LIMIT 20

int main(void) {
  char input[LIMIT];

  do {
    printf("Enter a string: ");

    gets(input);                            // Dangerous if the input entered 
                                            // is longer than LIMIT
    printf("You entered \"%s\"\n", input);
  }  while (strcmp(input, "exit"));
  
  return 0;
}